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The AuZn/GaAs Heterojunction: Evidence of Varying Solid State Reactions

  • George J. Vendura (a1), Russell Messier (a2), Karl Spear (a3), Carlo Pantano (a3) and William Drawl (a2)...

Abstract

Au-Zn is one of several metal systems applied to p-GaAs to form ohmic contacts. Although it exhibits a fair degree of reliability, the thrust toward higher power and adverse environments raises concern. Observations indicate that the electrical and mechanical properties as well as the stability of AuZn/GaAs vary with Zn thickness. In this study devices with thin and thick layers were tested visually, mechanically and using SEM and X-ray diffraction techniques. Results revealed significantly different reactivity and product chemistry that could significantly affect overall device performance.

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The AuZn/GaAs Heterojunction: Evidence of Varying Solid State Reactions

  • George J. Vendura (a1), Russell Messier (a2), Karl Spear (a3), Carlo Pantano (a3) and William Drawl (a2)...

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